Never one for a dull moment, Mauricio Umansky is CEO of The Agency, a Beverly Hills luxury brokerage. Umansky was the most productive individual California agent by sales volume in 2015 and his game plan’s success has trickled down. Obsessed by company culture, his agents represent all of the brokerage’s listings together to create less internal competition, a strategy that has brought in more than $4.8 billion in transactions in less than four years.